Re: slow render speed on mac mini

Looks like my real problem here is that I'm trying to load too much into
VRAM.
In my first test, I loaded 27 M of texture memory, displaying effectively
3.2 million pixels on screen at once. Frame rate: 20
In my second test, I loaded only 17 M of texture memory, displaying 2.7
million pixels. Frame rate: 50
The Mac Mini has 32 M of VRAM on the ATI Radeon chip, so with the double
buffers and Mac screen display and depth buffer, I'm maxing out. Renderer
has no choice but to go to system memory, thus slowing things down.
Also, in my tests, I switched between:
glTexParameteri(GL_TEXTURE_RECTANGLE_EXT, GL_TEXTURE_STORAGE_HINT_APPLE,
GL_STORAGE_CACHED_APPLE);
and
glTexParameteri(GL_TEXTURE_RECTANGLE_EXT, GL_TEXTURE_STORAGE_HINT_APPLE,
GL_STORAGE_SHARED_APPLE);
SHARED seemed to do better, but not by much. Maybe 1 FPS.
-brad
--
No virus found in this outgoing message.
Checked by AVG Anti-Virus.
Version: 7.0.322 / Virus Database: 267.2.0 - Release Date: 5/27/2005
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Mac-opengl mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden

Apple Footer

This site contains user submitted content, comments and opinions and is for informational purposes only. Apple may provide or recommend responses as a possible solution based on the information provided; every potential issue may involve several factors not detailed in the conversations captured in an electronic forum and Apple can therefore provide no guarantee as to the efficacy of any proposed solutions on the community forums. Apple disclaims any and all liability for the acts, omissions and conduct of any third parties in connection with or related to your use of the site. All postings and use of the content on this site are subject to the Apple Support Communities Terms of Use.
Apple